- Elon Musk has said Optimus production faces challenges over China's rare-earth export restrictions.
- The Tesla CEO said China wanted assurance that the parts wouldn't be used for "military purposes."
- He said that they wouldn't be and that Tesla planned to produce thousands of Optimus robots this year.
Tesla's Optimus production is getting squeezed by President Donald Trump's trade war.
Production of the humanoid robot could face some delays as Tesla deals with challenges, such as convincing China that some of the robot's parts won't be used for military purposes.
Elon Musk said during Tesla's first-quarter earnings call on Tuesday that Optimus production "was affected" by a supply chain issue in China. He said Tesla used rare-earth magnets sourced from China for the actuators in the robot's arms.
The issue is that China recently started to require an export license for some rare-earth elements. Tesla also said in the earnings call that it had tried to find "alternative sourcing" for rare-earth magnets for years.
"Tesla as a whole does not need to use permanent magnets, but when something is volume constrained, like an arm of the robot, then you want to try to make the motors as small as possible," Musk said.
The CEO said the magnets were "just going into a humanoid robot," which isn't a weapon system. But the magnets can be used for a range of purposes, including building military weapons such as missiles. Because of that, Musk said China was looking to be convinced that any magnets they supplied to Tesla wouldn't find their way into a weaponized system or robot.
"China wants some assurances that these are not used for military purposes, which, obviously, they're not," Musk said.
Beijing recently paused certain rare-earth element exports in response to Trump tariffs, which the President announced would "come down substantially" on Tuesday. In addition to affecting Tesla's Optimus production, the restriction could affect several industries dependent on rare-earth elements, including automakers and semiconductor manufacturers.
Musk said Tesla was "working through" the supply chain issue with China and would "hopefully" get a license to use the magnets. He said he was confident the company would be able to solve the issue and produce thousands of robots by the end of the year. He also said that Tesla expected to scale Optimus "faster than any product" and that he felt confident the automaker would produce a "million units per year" in under five years.
That's mostly in line with previous projections. Musk said during an all-hands employee meeting last month that Tesla would hopefully produce about 5,000 Optimus robots in 2025 and that it aimed to have enough parts to make 10,000 or 12,000 of the robots.
Musk added during Tuesday's call that "Optimus production will move as fast as the slowest and least lucky component" involved in the product. Because it's a new product, Tesla is dealing with "like 10,000 unique things" as it builds the humanoid robots, he said.
"Anyone who tells you they can predict with precision the production ramp of a truly new product doesn't know what they're talking about," Musk said.
